E-learning is emerging as the new paradigm of modern education. Most of the e-learning systems have limitations such as scarcity of content, lack of intelligent search and context sensitive personalization problems, which are the challenging tasks for researchers. This motivated the author to take up this problem and the method implemented through this work suggests the instructors to use the combination of Elearning System Using Rank-Based Clustering Algorithm (ESURBCA) was designed. The main aim of the model developed is to get consistency in content delivery, quality content in learning materials, students self-learning concept, and performance improvement in their examination. A study has been conducted During June 2013 to September 2013, the author collected samples of 1631 from final year and Second year of BCA, B.SC and B.Sc-IT students were trained through e-learning system architecture and the objectives of this study is 1. To measure the effectiveness of E-learning System Using Rank-Based Clustering Algorithm (ESURBCA) among the students of Mercury College of arts and science And Sankara arts and Science College in concepts of Programming in JAVA Course. The newly designed E-learning System using Rank-Based Clustering Algorithm (EUSRBCA)shows an improvement over the existing systems with better results. From the various evaluations carried out, the performance of the system found to be good comparatively to other systems in e-learning domain.

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Wireless Sensor Networks (WSNs) were increasing developing enthusiasm for as a long way returned as years; WSN assignments of a Every sensor network incorporates gazing and estimating sure marvels, as well as turning in collected data. Sensor network require applying distinctive strategies utilized in stressed out and wireless network. Simulation tool for wireless sensor system are steadily being utilized to contemplate sensor networks and to check new programs and Protocols in this developing research field. It is valuable to researcher to verify new though and dissect with proposed algorithm in virtual environment and assist to keep away from expensive hardware usage and time utilization too. This paper gives a whole overview and comparisons of various wireless sensor network simulators with the intention to help researchers with choosing the best simulator on hand for a selected application environment.

In Wireless Sensor Networks, sensor node's energy consumption can be balanced by the mobile sink. Due to the sensor node's limited energy, storage capacity, computing power and random mobility of sinks, it is a challenging task to find the route for data dissemination in the wireless sensor networks. Sensor nodes need to reconstruct their routes for efficient data delivery to the mobile sink latest location. In this paper, we propose a Virtual Grid-based Backbone Structure Type scheme (VGBST) to maintain optimal routes to mobile sink latest location and to minimize sensor nodes routes reconstruction cost.

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